| /* |
| * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @summary Checks that jstack correctly prints the thread names |
| * @modules java.base/jdk.internal.misc |
| * @library /test/lib |
| * @library ../share |
| * @run main/othervm -XX:+UsePerfData ThreadNamesTest |
| */ |
| import common.ToolResults; |
| import utils.*; |
| |
| public class ThreadNamesTest { |
| |
| private static final String STRANGE_NAME = "-_?+!@#$%^*()"; |
| private static final String LONG_NAME = "loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong"; |
| |
| static class NamedThread extends Thread { |
| |
| NamedThread(String name) { |
| setName(name); |
| } |
| |
| @Override |
| public void run() { |
| Utils.sleep(); |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| testWithName(STRANGE_NAME); |
| testWithName(""); |
| testWithName(LONG_NAME); |
| } |
| |
| private static void testWithName(String name) throws Exception { |
| // Start a thread with some strange name |
| NamedThread thread = new NamedThread(name); |
| thread.start(); |
| |
| // Run jstack tool and collect the output |
| JstackTool jstackTool = new JstackTool(ProcessHandle.current().getPid()); |
| ToolResults results = jstackTool.measure(); |
| |
| // Analyze the jstack output for the strange thread name |
| JStack jstack1 = new DefaultFormat().parse(results.getStdoutString()); |
| ThreadStack ti1 = jstack1.getThreadStack(name); |
| |
| if (ti1 == null) { |
| throw new RuntimeException("jstack output doesn't contain thread info for the thread '" + name + "'"); |
| } |
| } |
| |
| } |